F R A U N H O F E R I N S T I T U T E F O R M A N U F A C T U R I N G T E C H N O L O G Y

A N D A D VA N C E D M AT E R I A L S I F A M , B R A N C H L A B D R E S D E N

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MoSi2 COMPOSITES FOR HIGH-TEMPERATURE APPLICATIONS

Applications

• Heating elements (bar, pipe, susceptor)

• Components for heat exchangers in

corrosive environments

• Heat shields

• Reaction vessels

• Protective covering of thermocouples

• Crucibles, hot gas filtration

• Radiant plate

• High-temperature isolation components

• Parts for high-temperature mechanical

testing

Services

• Component development and

production

• Starting powders for further PM

processes (pressing, sintering, MIM, ...)

• Alloy development (e.g. with respect

to dispersion hardening and gradient

structures)

1 Assembly for high-temperature

bending test

2 SEM image MoSi2

3 Heating element

Fraunhofer Institute for

Manufacturing Technology

and Advanced Materials IFAM

Branch Lab Dresden

Winterbergstrasse 28

01277 Dresden I Germany

Contact

Dr.-Ing. Uwe Gaitzsch

Telefon +49 351 2537 430

Fax +49 351 2537 399

E-Mail: Uwe.Gaitzsch

@ifam-dd.fraunhofer.de

www.ifam-dd.fraunhofer.de

Advantages

• Production of MoSi2-X-composites

(X = SiC, TiB2, ZrO2, ...)

• Improvement of strength (σ4PB) and

fracture toughness (KIC)

• Lower sintering temperatures due to

powders with high sintering activity

• application temperatures up to 1700 °C

in oxidative and corrosive atmospheres

Products

• prototypical parts :

Dimensions:

Diameter: 5 - 165 mm

Length: up to 250 mm

• Powder:

sinter-active powders for silicide alloys

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Production of structural parts by

pressureless sintering

50 µm

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